Lead Engineer, Applied AI

ZipRecruiter; New York (NY); Remote; USD 160,000 - 180,000; Full time

Job summary

An innovative company is seeking a Lead Engineer for Applied AI to drive the development of cutting-edge AI solutions. This role involves spearheading full-stack AI projects, managing a talented engineering team, and optimizing AI infrastructure for performance and reliability. You'll have the opportunity to work on transformative applications that leverage large language models and contribute to a dynamic, fully remote environment. With a focus on autonomy and high expectations, you'll play a pivotal role in shaping the future of AI at the company while enjoying generous benefits and a collaborative culture.

Benefits

35 days of PTO annually

Paid sabbatical after 5 years

100% medical coverage for employees and families

Home office stipend

Learning & development stipend

Annual bonus potential

Company retreats

Autonomy and trust at work

Qualifications

• 5+ years experience in full-stack engineering on complex web applications.
• Proficiency in Ruby on Rails, MySQL/Postgresql, and ReactJS.

Responsibilities

• Lead development of AI solutions that enhance user experiences.
• Manage a small team of engineers and oversee project execution.

Skills

Full-stack engineering

Ruby on Rails

MySQL/Postgresql

ReactJS

Python

JavaScript

TypeScript

AI frameworks

NLP

Machine Learning

Tools

OpenAI

Hugging Face

LangChain

Vector databases

Job description

Job Description

About Us

Circle is building the world's leading all-in-one platform for online communities. We make it possible for creators, coaches, educators, and businesses to bring together their audience with engaging discussions, live streams, events, chat, courses, and payments — all in one place, all under their own brand.

We're proud to be a fully remote company of around 180 (and growing!) team members from 30+ countries around the world. We seek exceptional individuals around the world, set them up to do the best work of their lives, and in turn, create a meaningful impact in their own lives. We don't track hours, but we do manage for high expectations very closely. We collaborate across time zones, are highly async, and like to document a lot.

Twice a year, we bring the whole company together in beautiful places around the world for our company offsites. So far, we've hosted offsites in Turkey, Portugal, Mexico, Thailand, Colombia, Italy, Ireland, and more, with still more to come!

About the role

The Applied AI team at Circle is at the forefront of leveraging AI to drive innovation across our company.

We're looking for a Lead Engineer, Applied AI to spearhead the development of AI solutions that enhance user experiences across our platform, both internally and externally. You'll also lead and manage the Applied AI engineering team, help organize & coordinate work, and serve as a people manager.

If you're passionate about working on real production use cases of large models (LLMs) and want to contribute to transformative AI applications, this role is for you.

What you'll be doing

• Ship full-stack AI projects end to end - exciting projects such as AI Agents, Retrieval-Augmented (RAG), Structured Extraction, internal tooling for customer-facing teams, and build infrastructure for LLM inference.
• Own the end-to-end architecture and technical strategy for AI solutions.
• Hire, onboard, and lead a small team of senior engineers, supporting their growth and ensuring high-impact execution.
• Improve processes, tools, and systems to scale AI solutions across Circle.
• Optimize AI infrastructure for performance, reliability, and cost-efficiency.
• Help us stay up-to-date with the cutting-edge AI research, techniques, and tools.

What you'll need to be successful

• 5+ years experience working as a full-stack engineer on complex web applications.
• Strong proficiency in Ruby on Rails, MySQL/Postgresql, ReactJS. Familiarity with both frontend and backend is necessary, but a high degree of proficiency in both is not a requirement.
• Strong proficiency in at least one programming commonly used for AI development (Python, JavaScript, TypeScript).
• You have deployed at least one AI Agent to production, with a deep understanding of the entire development lifecycle — from initial concept to final deployment with customer feedback loops.
• You have experience leading a team of engineers, especially in growth-focused environments.
• Hands-on experience with AI frameworks and tools, such as OpenAI, Anthropic, Hugging Face, LangChain, and vector databases.
• Strong understanding of NLP, ML, and LLM fundamentals - including modern LLM technologies, RAG, and prompt engineering techniques.
• A desire to work in an environment which values speed of iteration and individual autonomy, while also embracing personal accountability and the ability to collaborate effectively as part of a dynamic team.

Bonus points

• You have contributed to open-source AI/ML projects.

$160,000 - $180,000 USD per year

The cash compensation range shown is a starting point. In addition to equity, benefits and perks, your cash compensation is subject to an annual review and increase on a once per year basis.

The fun stuff

• Fully remote: work from anywhere in the world!
• Autonomy and trust to do your job: we care about outcomes over everything else.
• Paid time away: all employees are given 35 days of PTO annually. We also offer a paid sabbatical after 5 years.
• Generous U.S. benchmarked compensation and startup equity no matter where you are in the world.*
• Awesome medical coverage with 100% coverage for you and your family, or medical reimbursement options where applicable!*
• Parental leave for parents expanding their family, or just starting one.
• Home office stipend to help you get up and running.
• Learning & development stipend to help you level up your professional skills.
• Annual bonus potential for roles that don't already receive variable income or commission.
• Company retreats: Twice a year, the Circle team gets together for a fully paid company retreat in incredible places around the world! We've had past retreats in Colombia, Portugal, and Mexico, with more planned on the horizon.
• Check out our Careers page for more.

*Your role, location and unique circumstance may affect this.

Equal Employment Opportunity

Circle is an equal opportunity employer and as such, we do not discriminate on the basis of any characteristic protected by applicable laws. If you require any accommodations during the recruitment process, please let us know and we will work with you to meet your needs.